Processing of top creep and oxidation resistant Fe-Al based ODS nalloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F22%3A00566372" target="_blank" >RIV/68081723:_____/22:00566372 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.prostr.2022.12.199" target="_blank" >http://dx.doi.org/10.1016/j.prostr.2022.12.199</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2022.12.199" target="_blank" >10.1016/j.prostr.2022.12.199</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Processing of top creep and oxidation resistant Fe-Al based ODS nalloys

Popis výsledku v původním jazyce

The Fe-Al based oxide dispersion strengthened (ODS) alloys are investigated since the 1960’s. The alloys are produced by nmechanical alloying of metal and Y2O3 powders followed by hot consolidation such as extrusion, rolling or rotary swaging. The noxides are dissolved during mechanical alloying in the matrix and they subsequently precipitate during the hot consolidation and nthermal treatment. The processing involves several parameters which need to be carefully optimized and controlled to produce a nsuccessful alloy with excellent creep properties. The presented systematic testing and microstructure studies are necessary to nidentify the values of the most important parameters. The coarse-grained ferritic Fe-10Al-4Cr-4Y2O3 oxide dispersion nstrengthened alloy exhibits top creep and oxidation resistance. Compared to commercial INCOLOY MA956 it involves twice nmore Al, ten times more Y2O3 precipitates and exhibits twice higher creep strength at 1100-1300 °C. Moreover, the creep rate is npractically immeasurable and the time to fracture reaches several thousands of hours at applied stresses of 60-70 % of the nultimate strength under the strain rate 10-6 s-1 in the order of 120 MPa at 1100 °C and 60 MPa at 1300 °C. The paper describes ndecisive processing steps and characterizes the most important microstructural and mechanical properties.

Název v anglickém jazyce

Processing of top creep and oxidation resistant Fe-Al based ODS nalloys

Popis výsledku anglicky

The Fe-Al based oxide dispersion strengthened (ODS) alloys are investigated since the 1960’s. The alloys are produced by nmechanical alloying of metal and Y2O3 powders followed by hot consolidation such as extrusion, rolling or rotary swaging. The noxides are dissolved during mechanical alloying in the matrix and they subsequently precipitate during the hot consolidation and nthermal treatment. The processing involves several parameters which need to be carefully optimized and controlled to produce a nsuccessful alloy with excellent creep properties. The presented systematic testing and microstructure studies are necessary to nidentify the values of the most important parameters. The coarse-grained ferritic Fe-10Al-4Cr-4Y2O3 oxide dispersion nstrengthened alloy exhibits top creep and oxidation resistance. Compared to commercial INCOLOY MA956 it involves twice nmore Al, ten times more Y2O3 precipitates and exhibits twice higher creep strength at 1100-1300 °C. Moreover, the creep rate is npractically immeasurable and the time to fracture reaches several thousands of hours at applied stresses of 60-70 % of the nultimate strength under the strain rate 10-6 s-1 in the order of 120 MPa at 1100 °C and 60 MPa at 1300 °C. The paper describes ndecisive processing steps and characterizes the most important microstructural and mechanical properties.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GX21-02203X" target="_blank" >GX21-02203X: Vylepšení vlastností současných špičkových slitin</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Procedia Structural Integrity

ISBN

—

ISSN

2452-3216

e-ISSN

—

Počet stran výsledku

8

Strana od-do

1576-1583

Název nakladatele

Elsevier

Místo vydání

Amsterdam

Místo konání akce

Funchal

Datum konání akce

27. 6. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

001248864600202